IRLR8256 Datasheet, PDF (5/11 Pages) Kersemi Electronic Co., Ltd. – High Frequency Synchronous Buck

IRLR8256PBF
IRLU8256PBF
90
80
70
60
50
40
30
20
10
0
25
Limited By Package
50 75 100 125 150 175
TC , Case Temperature (°C)
Fig 9. Maximum Drain Current vs.
Case Temperature
2.5
2.0
1.5
ID = 25µA
1.0
0.5
-75 -50 -25 0 25 50 75 100 125 150 175
TJ , Temperature ( °C )
Fig 10. Threshold Voltage vs. Temperature
10
1
D = 0.50
0.20
0.10
0.1
0.05
0.02
0.01
0.01
SINGLE PULSE
( THERMAL RESPONSE )
0.001
1E-006
1E-005
R_1R1
R_2R2
R_3R3
R_4R4
Ri (°C/W) τi (sec)
0.04252 0.000007
τ_{J τJ}
τ_{1 τ1}
τ_{Cτ 0.57953 0.000109}
τ_{2 τ2}
τ_{3 τ3}
τ_4τ4
1.17480 0.001003
Ci= τi/Ri
Ci i/Ri
0.60472 0.005976
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
0.0001
0.001
0.01
0.1
t1 , Rectangular Pulse Duration (sec)
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
2014-8-25
5
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